Contacts of the strand formed by residues 519 - 522 (chain A) in PDB entry 2P2B
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 VAL 519 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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265A SER 4.6 1.3 - - - +
266A GLY* 3.8 9.0 - - - +
267A SER 3.5 28.5 - - - +
515A ARG* 3.5 39.9 - - + +
517A ASP* 3.2 29.7 - - - +
518A ASP* 1.3 77.2 - - - +
520A LEU* 1.3 71.7 + - - +
521A ASN 4.3 0.2 + - - -
526A ARG* 3.6 31.4 - - + +
527A LEU 3.5 9.0 - - - +
528A GLY* 4.9 0.2 - - - -
557A GLN* 4.6 2.1 + - - +
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Residues in contact with LEU 520 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
515A ARG* 5.4 1.5 - - - +
518A ASP 5.4 0.2 - - - -
519A VAL* 1.3 83.1 - - - +
521A ASN* 1.3 60.2 + - - +
522A VAL* 4.0 12.8 - - + -
525A HIS 3.4 2.0 - - - +
526A ARG* 3.4 5.5 - - - -
527A LEU* 2.6 36.5 + - + +
529A THR* 3.5 29.8 - - + -
532A ILE* 4.3 15.5 - - + -
547A VAL* 4.1 19.1 - - + -
548A VAL* 4.4 4.5 - - - +
549A GLY* 3.4 26.7 - - - +
557A GLN* 3.5 16.4 - - - +
559A ILE* 4.3 15.3 - - + -
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Residues in contact with ASN 521 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
387A GLY 3.9 5.0 - - - +
388A GLU* 3.2 40.2 + - - +
389A PRO* 4.6 6.3 - - + +
515A ARG* 5.9 5.1 - - + +
519A VAL 4.3 0.2 + - - -
520A LEU* 1.3 72.3 - - - +
522A VAL* 1.3 59.3 + - - +
524A GLY* 3.1 32.7 - - - +
525A HIS 3.4 3.9 - - - +
526A ARG* 5.7 0.4 - - - -
555A LYS 3.8 2.9 + - - +
556A GLY* 4.7 6.1 - - - -
557A GLN* 2.9 37.9 + - + +
999A PRX 6.2 2.9 - - - +
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Residues in contact with VAL 522 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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520A LEU* 4.1 18.8 - - + -
521A ASN* 1.3 74.7 + - - +
523A SER* 1.3 70.2 + - - +
525A HIS* 2.9 39.2 + - - +
527A LEU* 4.3 11.7 - - + -
555A LYS* 4.8 7.9 - - + +
557A GLN* 3.5 21.3 - - + +
558A ALA* 5.1 0.9 - - - -
559A ILE* 3.6 32.3 - - + -
590A LEU* 3.9 18.4 - - - +
594A ASP* 5.2 2.0 - - - +
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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