Contacts of the helix formed by residues 541 - 546 (chain C) in PDB entry 4KYI
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 PRO 541 (chain C).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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331C ALA* 4.2 17.0 - - + +
332C ILE* 4.2 37.2 - - + -
335C PHE* 3.9 21.5 - - + -
539C TRP 3.6 0.4 - - - +
540C ALA* 1.3 84.8 - - + +
542C ILE* 1.3 61.3 + - - +
543C GLU* 4.4 7.2 - - + +
544C TRP* 3.0 44.0 + - + +
545C VAL* 3.3 11.3 + - - +
553C ALA* 5.1 4.7 - - + +
555C ASP* 5.5 4.9 - - + +
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Residues in contact with ILE 542 (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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331C ALA* 5.3 8.4 - - + +
362C GLU* 3.3 35.8 + - + +
363C LYS 4.0 22.7 - - - +
364C VAL* 4.5 15.9 - - + +
422C TYR* 5.1 2.5 - - + +
498C LEU* 5.0 2.0 - - + -
501C LYS* 4.2 15.7 - - + +
540C ALA 3.3 5.7 + - - -
541C PRO* 1.3 68.3 - - - +
543C GLU* 1.3 86.5 + - + +
545C VAL* 3.2 35.5 - - + +
546C VAL* 3.3 17.2 - - + +
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Residues in contact with GLU 543 (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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328C ALA* 4.0 30.8 - - + +
331C ALA* 5.3 5.6 - - + +
332C ILE* 6.0 4.0 - - + -
541C PRO* 5.0 6.5 - - + -
542C ILE* 1.3 96.1 - - + +
544C TRP* 1.3 52.2 + - - +
546C VAL* 3.3 11.2 - - - +
547C SER* 2.8 35.4 + - - -
555C ASP* 4.2 11.9 - - - +
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Residues in contact with TRP 544 (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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490C ILE* 4.8 5.6 - - + -
493C GLU* 3.9 32.5 - - + -
494C LYS* 3.6 41.5 - - + +
497C ALA* 4.7 1.6 - - + -
537C LEU* 5.6 2.2 - - + -
540C ALA* 4.2 16.4 - - + -
541C PRO* 3.0 28.0 + - + +
543C GLU* 1.3 78.8 - - - +
545C VAL* 1.3 91.1 - - + +
547C SER* 3.2 19.4 + - - -
549C PHE* 4.5 13.3 - + + +
551C GLY 3.9 8.8 + - - -
552C PRO* 3.1 27.5 + - + -
553C ALA* 3.8 28.9 - - + -
555C ASP* 3.9 25.7 + - + -
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Residues in contact with VAL 545 (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 MET* 3.4 18.5 - - - +
494C LYS* 3.3 37.2 - - - +
497C ALA* 4.0 18.2 - - + -
498C LEU* 4.4 16.6 - - + -
501C LYS* 4.3 11.2 - - + -
540C ALA* 4.5 1.6 - - + -
541C PRO 3.4 14.4 - - - +
542C ILE* 3.2 30.1 - - + +
544C TRP* 1.3 94.1 - - + +
546C VAL* 1.3 66.8 + - + +
547C SER 3.4 0.2 - - - -
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Residues in contact with VAL 546 (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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411C GLN* 5.3 2.3 - - - +
412C THR 5.6 0.2 - - - +
413C PHE* 4.1 23.9 - - + -
418C MET* 4.9 5.2 - - - -
422C TYR* 3.7 53.2 - - + +
498C LEU* 5.4 0.7 - - + -
542C ILE* 3.3 17.3 - - + +
543C GLU* 3.3 14.6 - - - +
545C VAL* 1.3 92.9 - - + +
547C SER* 1.3 66.1 + - - +
548C LEU* 3.9 1.0 + - - +
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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