Contacts of the helix formed by residues 419 - 426 (chain C) in PDB entry 2JLF
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ALA 419 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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414C GLN 3.0 9.5 + - - +
415C LEU* 3.4 18.5 + - + +
418C THR* 1.3 87.6 - - - +
420C PRO* 1.3 64.9 - - - +
421C HIS* 3.0 17.6 + - + -
422C LEU* 3.1 40.1 + - + +
423C ASN* 4.2 0.9 - - - +
446C ILE* 4.3 5.8 - - + -
464C ALA* 4.1 6.1 - - + -
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Residues in contact with PRO 420 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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415C LEU 3.5 12.3 - - - +
416C ASP 5.3 4.7 - - - +
417C HIS 5.9 0.7 - - - -
418C THR* 3.6 7.6 - - - +
419C ALA* 1.3 89.7 - - - +
421C HIS* 1.3 65.2 + - + +
422C LEU 3.1 1.3 - - - -
423C ASN* 3.1 40.7 + - - +
424C SER 4.7 0.2 + - - -
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Residues in contact with HIS 421 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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418C THR 4.7 0.7 - - - -
419C ALA* 4.0 16.7 - - + -
420C PRO* 1.3 86.1 - - + +
422C LEU* 1.3 79.8 + - + +
423C ASN 3.3 0.7 - - - -
424C SER* 3.2 18.3 + - - -
425C ARG* 4.8 1.7 - - - +
445C GLU* 3.4 26.9 - - - -
463C ARG* 3.5 51.2 - - + +
464C ALA 3.8 7.9 + - - -
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Residues in contact with LEU 422 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
415C LEU* 3.8 12.8 - - + -
419C ALA* 3.1 31.0 + - + +
421C HIS* 1.3 96.8 - - + +
423C ASN* 1.3 61.5 + - - +
424C SER 3.2 2.2 - - - -
425C ARG* 2.9 57.2 + - + +
426C ILE* 3.7 8.5 + - - +
435C PHE* 4.1 14.1 - - + -
444C GLU* 4.1 9.0 - - - +
445C GLU* 4.9 8.7 - - + +
446C ILE* 3.9 24.2 - - + -
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Residues in contact with ASN 423 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122C ARG* 2.8 42.4 + - - +
415C LEU* 4.1 11.5 + - - +
419C ALA 4.2 0.2 - - - +
420C PRO* 3.1 31.9 + - - +
422C LEU* 1.3 79.4 - - - +
424C SER* 1.3 61.9 + - - +
426C ILE* 3.1 24.7 + - - +
427C LYS* 4.9 0.9 - - - +
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Residues in contact with SER 424 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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420C PRO 4.7 0.2 + - - -
421C HIS 3.2 19.8 + - - -
423C ASN* 1.3 77.1 - - - +
425C ARG* 1.3 62.0 + - - +
427C LYS* 3.1 33.5 - - - +
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Residues in contact with ARG 425 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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421C HIS 4.8 1.6 - - - +
422C LEU* 2.9 45.0 + - + +
424C SER* 1.3 85.2 - - - +
426C ILE* 1.3 57.4 + - - +
427C LYS* 3.7 1.3 - - - -
431C SER* 3.4 28.8 - - - +
434C ARG 5.7 0.2 - - - -
435C PHE* 3.5 31.5 - - + +
438C SER* 4.3 5.1 + - - -
444C GLU* 2.8 30.3 + - - -
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Residues in contact with ILE 426 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122C ARG* 4.0 26.4 - - + +
125C LEU* 4.6 11.3 - - + +
126C LEU* 3.5 37.7 - - + -
415C LEU* 4.1 12.6 - - + -
422C LEU 4.0 9.9 - - - +
423C ASN* 3.1 16.2 + - - +
425C ARG* 1.3 80.3 - - - +
427C LYS* 1.3 58.6 + - - +
431C SER* 3.9 3.4 - - - -
432C ALA* 3.9 17.9 - - + -
435C PHE* 3.5 42.4 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il